lib-storage: mail_storage_copy_can_use_hardlink() was always returning TRUE.
lib-storage: mail_storage_copy_can_use_hardlink() was always returning TRUE.

jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jwm/dovecot-notmuch,jkerihuel/dovecot,jkerihuel/dovecot,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jwm/dovecot-notmuch,jkerihuel/dovecot